Thermowell



FIG. 1 is a side view of a thermowell showing my new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a side view of a second embodiment of a thermowell, it being understood that the broken lines are for illustrative purposes only and form no part of the claimed design; and,

FIG. 6 is a perspective view of FIG. 5. 

The ornamental design for a thermowell, as shown and described. 